✦ LIBER ✦

Some aspects of n-alkanes adsorption on interfaces of PEG-20M with carrier gas and solid support in capillary gas-liquid chromatography

✍ Scribed by Victor G. Berezkin; Alexander A. Korolev; Irina V. Malyukova

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 68 KB
Volume: 9
Category: Article
ISSN: 1040-7685
DOI: 10.1002/(sici)1520-667x(1997)9:1<43::aid-mcs7>3.0.co;2-6

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✦ Synopsis

The retention adsorption mechanism of n-alkane retention on open capillary columns coated with PEG-20M was studied theoretically and experimentally. For the given system, retention was described by a binomial absorptionadsorption equation. Adsorption retention of n-alkanes depends upon their adsorption on the gas-PEG-20M interface, but adsorption on the interface of the Ž . PEG-20M and the capillary inner wall solid support could be neglected. This was shown by modifying the inner wall and showing that this had little effect on retention.